Inside the filter, the filter bag is supported by a metal mesh basket. The liquid flows in from the inlet, is filtered through the filter bag, and then flows out from the outlet, while the impurities are intercepted in the filter bag. The filter bag can be replaced or cleaned and reused. This machine is easy to operate. When in use, simply install the filter bag of the required fineness grade into the filter cartridge, check whether the O-ring seal is intact, then screw on the cover and tighten the bolts before starting work. When the pressure difference reaches a certain value, it is necessary to replace the filter bag. The screw-down multi-bag filter is suitable for large-flow filtration. It can be customized from 2 bags to 24 bags or even more.